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Areas further east, including Ontario and Quebec, have already experienced previews of fall weather in recent weeks thanks to some unseasonable dips in temperature, but Scott said those regions, too, will see overall warmer weather, forecasting an unusual number of pleasant days in October especially.

Southwesterly air approaching the Atlantic provinces is expected to keep temperatures in check slightly above the normal range, Scott said, but added the area should brace for wetter conditions than the rest of the country.

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This satellite image shows Hurricane Irma as it makes its way across the Atlantic Ocean in to the Caribbean September 6, 2017.

"We've had such a busy Atlantic hurricane season," he said. "There may be some remnants of storms, or at least moisture from those storms, that gets pulled up and gives us above-normal precipitation for the next few months."

Central provinces will see close to average precipitation, with heavier individual rainfall balanced out by a higher proportion of rain-free, pleasant days, he said.

Such conditions will come as a relief to stretches of Ontario and Quebec, which shivered through unseasonably cool and wet summer months.

Winter conditions to settle in mid-November

Scott said dry conditions that characterized the summer across the southern Prairies and southeast interior of British Columbia are expected to carry over into the autumn, with rainfall levels expected to be below seasonal averages.

The B.C. coast, however, can expect typical rainfall patterns, which Scott said may come as a relief to an area ravaged by wildfires in recent months.

Scott said winter conditions will likely settle in nationwide around mid-November, adding colder temperatures are expected to prevail across a large swath of the country for the latter part of the year.